Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net loss	$ (8,705)	$ (40,595)	$ (29,882)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Stock-based compensation	9,075	3,029	1,750
Amortization of debt issuance costs and discounts	2,735	1,283	301
Reimbursement of shareholder proxy solicitation costs	0	4,500	0
Provision for expected losses	1,236	2,958	2,534
Provision for inventory reserve	693	681	3,172
Depreciation and amortization included in operating expenses	4,107	4,307	4,430
Depreciation included in cost of sales for rental equipment	1,405	2,710	3,074
Property and equipment write-off	1,658	0	0
Gain on extinguishment of debt	(3,065)	0	0
Operating lease right-of-use asset impairment	1,578	0	0
Other	1,104	2,103	665
Changes in operating assets and liabilities:
Accounts receivable	(10,126)	1,818	(8,706)
Finance receivables	(1,877)	547	(669)
Inventory	3,142	1,463	(5,607)
Prepaid expenses and other assets	(847)	(563)	(395)
Accounts payable and accrued expenses	7,013	2,988	1,293
Operating lease liabilities	(1,014)	(1,384)	0
Deferred revenue	65	16	(132)
Net cash provided by (used in) operating activities	8,177	(14,139)	(28,172)
Cash flows from investing activities:
Purchase of property and equipment	(1,838)	(2,538)	(4,875)
Proceeds from sale of property and equipment	10	44	116
Net cash provided by (used in) investing activities	(1,828)	(2,494)	(4,759)
Cash flows from financing activities:
Cash used in retirement of common stock	0	0	(81)
Proceeds from long-term debt issuance by Antara, net of issuance costs paid to Antara	0	14,248	0
Proceeds from equity issuance by Antara, net of issuance costs paid to Antara	0	17,879	0
Proceeds from PPP Loan	0	3,065	0
Payment of repurchase of common stock awards	0	0	(120)
Payment of third-party debt issuance costs	0	(1,980)	(156)
Proceeds from long-term debt issuance by JPMorgan Chase Bank, N.A., net of debt issuance costs	14,550	0	0
Repayment of long-term debt	(15,744)	(2,522)	(23,254)
Proceeds from (repayments of) Revolving Credit Facility	0	(10,000)	0
Proceeds from private placement	55,008	0	0
Payment of equity issuance costs	(2,618)	0	0
Payment of Antara prepayment penalty and commitment termination fee	(1,200)	0	0
Proceeds from exercise of common stock options	78	192	42
Net cash provided by (used in) financing activities	50,074	20,882	(23,569)
Net increase (decrease) in cash and cash equivalents	56,423	4,249	(56,500)
Cash and cash equivalents at beginning of year	31,713	27,464	83,964
Cash and cash equivalents at end of year	88,136	31,713	27,464
Supplemental disclosures of cash flow information:
Interest paid in cash	$ 1,055	$ 1,314	$ 2,793